"That's Xue Fanghua's issue, she is not your biological daughter, she's just impersonating Yue Rou!"
Not mentioning Xue Fanghua would be better, whenever Hei Long hears her name, he gets angry.
If she hadn't revealed the truth of the past to Yue Rou, Yue Rou wouldn't have deserted both of them for three years.
She originally intended to keep the truth about the deaths of all 32 members of the Yue family a secret from Yue Rou for her whole life.
When the military department discovered there were survivors of the Yue family, they decided to train Yue Rou into an assassin to kill the surviving members.
To make the Yue family live in unbearable sadness and let the Lu family shoulder the bloody debt.
As long as the two major families of Z Country became deadly enemies, it would only benefit F Country.
Then, young Hei Long, after learning about this, to prevent Yue Rou from becoming their weapon, made arrangements for Xue Fanghua.